001    /**
002     * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
003     * Licensed under the Apache License, Version 2.0 (the "License");
004     * you may not use this file except in compliance with the License.
005     * You may obtain a copy of the License at
006     *
007     *   http://www.apache.org/licenses/LICENSE-2.0
008     *
009     *  Unless required by applicable law or agreed to in writing, software
010     *  distributed under the License is distributed on an "AS IS" BASIS,
011     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012     *  See the License for the specific language governing permissions and
013     *  limitations under the License. See accompanying LICENSE file.
014     */
015    package org.apache.oozie.command.coord;
016    
017    import java.util.List;
018    
019    import org.apache.oozie.SLAEventBean;
020    import org.apache.oozie.command.Command;
021    import org.apache.oozie.command.CommandException;
022    import org.apache.oozie.store.SLAStore;
023    import org.apache.oozie.store.Store;
024    import org.apache.oozie.store.StoreException;
025    import org.apache.oozie.util.XLog;
026    
027    public class SLAEventsCommand extends Command<List<SLAEventBean>, SLAStore> {
028    
029        private long seqId;
030        private int maxNoEvents;
031        private long lastSeqId = -1;
032    
033        public SLAEventsCommand(long seqId, int maxNoEvnts) {
034            super("SLAEventsCommand", "SLAEventsCommand", 1, XLog.OPS);
035            this.seqId = seqId;
036            this.maxNoEvents = maxNoEvnts;
037        }
038    
039        @Override
040        protected List<SLAEventBean> call(SLAStore store) throws StoreException, CommandException {
041            long lsId[] = new long[1];
042            List<SLAEventBean> slaEvntList = store.getSLAEventListNewerSeqLimited(seqId, maxNoEvents, lsId);
043            store.getEntityManager().clear();
044            setLastSeqId(lsId[0]);
045            return slaEvntList;
046        }
047    
048        public void setLastSeqId(long lastSeqId) {
049            this.lastSeqId = lastSeqId;
050        }
051    
052        public long getLastSeqId() {
053            return lastSeqId;
054        }
055    
056        @Override
057        public Class<? extends Store> getStoreClass() {
058            // TODO Auto-generated method stub
059            return SLAStore.class;
060        }
061    
062    }